Joint-mold.



T. HOGAN.

JOINT MOLD.

APPLICATION FILED PEB.6,1907.

luwcuhn f/wi/zas flaya 7a gyflyoei/ W 7 9 5 PATENTED SEPT. 10, 1907.

UNITED "STATES PATENT OFFICE.

THOMAS HOGAN, OF SHREVEPORT, LOUISIANA, ASSIGNOR O1 ONE-HALF TO ALLEN BESSE, OF SHREVEPORT, LOUISIANA.

JOINT-MOLD.

I No. 865,897.

Specification of Letters Patent.

Patented Sept. 10,1907.

Application filed Psbrusrv 6,1907. Serial No. 366,106-

To all whom it may concern:

Be it known that I, Taoxas HOGAN, a citizen of the United States of America, residing at Shreveport, in the parish of Caddo and State of Louisiana, have invented new and useful Improvements in Joint-Molds, of which the following is a specification.

This invention relates to improvements in joint molds for depositing metal around the proximate ends of pipes for the purpose of joining the same, and particularly for the production of joints of that type known as wiped joints.

. One of the objects of the invention is to provide a joint mold of this character which is simple of construction, adapted to be conveniently applied and removed, comparatively inexpensive of production, and capable of forming a finished joint without the exer-- cise of any particular degree of skill on the part of the operator.

Another object of the invention is to provide a joint mold in which provision is made for introducing the molten metal and forming a joint for connecting pipes which are horizontally or vertically arranged or disposed at any angle between the two.

A still further object of the invention is to provide improved means for holding the sections of the mold closed and for preventing leakage of the molten metal between the mold and pipe sections.

In the accompanying drawings,Figure l is a vertical longitudinal section through a mold embodying my invention, showing the same applied to two pipe sections and with the metal to form the joint in place within the mold. Fig. 2 is a cross section through one of the pipe sections, showing the mold in end elevation. Fig. 3 is a transverse section through the mold, showing the sections thereof partly opened for the insertion or removal of the pipes.

The mold is preferably of elliptical form and longitudinally divided to form two similar half sections 1 and 2, the described form of the mold increasing the size of the mold chambers formed thereby progressively toward the center so as to correspondingly increase the thickness of the deposited metal, which. in practice, is thickest at the point where the pipes abut or fit together.

The mold sections are provided at the base or one side with lapping ears 3 through which passes a rivet or other similar fastening 4, whereby they are hingedly or pivotally connected to permitthem to swing toward and from each other for the purpose of opening and closing the mold. At the top or opposite side the two sections of the mold are provided with semicircular threaded stems or projections 5 adapted to abut when said sections are closed to form a sectional screw adapted to be engaged by a thumb nut or winged nut 6, by

which the mold sections may be firmly secured in closed position.

The meeting faces of the mold sections are adapted to closely abut to prevent escape of the molten metal introduced to form the joint when said sections. are closed, and the ends of the sections are respectively provided with semicircular recesses 7, forming bores or passages for the reception of the ends of the pipe sections 8 and 9 which are to be inserted into the mold for the purpose of forming the connecting joint. The recessed or cut away portions at the ends of the mold sections providing the recesses 7 are formed with reduced sealing flanges 8 projecting inwardly therefrom and extending completely around the passages when the mold sections are closed. These flanges are adapted to bite slightly into the surfaces of the pipes 8 and 9, which are usually made of lead, and thus form grooves around the pipes into which the flanges project, thus sealing the joints between the pipes and ends of the mold to prevent the escape of any of the molten metal at these points. The ends of the pipes 8 and 9 may be brought into abutting relation or fitted one within the other, the mold being adapted for the formation of a joint around pipes assembled in either manner.

The meeting faces of the sections are provided with tapered recesses 9, which together form a duct or inlet for the introduction of the molten metal into the mold. These recesses 9 are arranged at one side of the mold, preferably adjacent the screw sections 5, and provide a duct so arranged as to permit of the introduction of the molten metal when the mold and pipes to be joined are horizontally disposed. Similar recesses 10 are provided in the meeting faces of the sections adjacent one of the ends of the molds and inclined inwardly at an angle toward the center of the mold. This arrangement of the recesses 10 provides a duct or passage by which the molten metal may be introduced when the mold and pipes to be joined are arranged in an upright position or at any angle between the vertical and horizontal. A closing plug or stopper 11 is provided to close either duct, and is of tapered form to fit the same and provided with a finger piece 12 by which it may be conveniently manipulated by the operator. In order to prevent possibility of displacement or extraction of the plug when the mold is closed, the plug is formed I with an annular flange 13 adapted to fit within grooves 14 in the walls of the ducts, thus preventing any liability of displacement of the plug and at the same time scaling the ducts against the escape of any of the introduced metal. Either opening may be closed by the use of the plug when the other is designed to be employed for the introduction of the metal, accordingly as the pipes are arranged in a vertical or horizontal position.

secured in position by engagement of the nut 6 with the screw sections 5, the stopper 7 having been previously placed in position'to close the duct which is not to be used. When the mold is thus clamped in position upon the pipe, the flanges 8 will bite into the pipe and thus seal the ends of the mold against the escape of the metal. After the mold is applieddn position in the manner stated, the molten metal 15 is introduced through the open duct to form 'the joint, after which the mold is allowed to remain in position until the metal is cool. After the joint has cooled to the desired extent. the mold may be removed upon detaching the nut 6, as will be readily understood. I

The advantages of the improved construction of mold will be apparentirom the foregoing description, and

it will be understood that by its use a finished joint may beformed without the exerciseoi any particular degree of skill on the part of the operator.

as new, is:

1. A mold for making wiped joints comprising two hinged sections having means for hinging and connecting the same about the pipe to be Joined, said sections being Having thus described the invention, what is claimed provided at their ends with recesses forming passages for the pipes,- the walls of the recesses having broad bearing surfaces provided with intermediutely arranged flanges extending inwardly therefrom to engage the pipes and seal the ends of the same against the escape of the molten material.

2. A mold of the clmracter described comprising two hinged sections, suid sections being provided in their meeting faces with recesses forming ducts located at diilerent points, whereby the molten metal may be introduced when the mold is in a vertical or horizontal position, the wallsof the ducts being formed with grooves, means for secur- .mold sections also having their meeting faces recessed to form ducts, u stopper for closing either duct, and a nut adapted to engage the screw to hold the mold sections clamped about the pipes.

In testimony whereof, I aiiix my signature in presence of two witnesses.

THOMAS HOGAN.

Witnesses I Ponnsn S. Curran,

L. I. BUTLER. 

